<template>
  <div class="swiper">
    <swiper :options="swiperOption"  v-if="showSwiper">
      <!-- slides -->
      <swiper-slide v-for="item of list" :key="item.id">
        <img class="swiper-img" :src="item.imgUrl" />
      </swiper-slide>
      <!-- Optional controls -->
      <div class="swiper-pagination" slot="pagination"></div>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeSwiper',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        // 支持循环轮播
        loop: true,
        autoplay: 10000
      }
    }
  },
  computed: {
    showSwiper () {
      return this.list.length > 0
    }
  }
}
</script>

<style lang="stylus" scoped>
  // >>>样式穿透
  .swiper >>> .swiper-pagination-bullet-active
    background: #fff
  .swiper
    overflow hidden
    width 100%
    height 0
    background #eee
    padding-bottom 30.47%
    .swiper-img
      width 100%
</style>
